It's a blog. They didn't put it on A1 above the fold.

I hate science for the sake of science, when researchers slap each other on the back for proving common knowledge, oblivious to the fact they've contributed nothing to solving the problem at hand. That said, you don't know how a study is going to turn out when you start it (what if there'd been some surprising results like the bullies were repulsed by images of pain, for example?) and it is work from a major university. To me, it seems perfectly appropriate to include in a blog...even if it is one of the official blogs of (gasp) The New York Times.